Filing-machine.



e. HEINONEN.

FILING MACHINE APPLICATION FILED IAN. 9,1918.

2 SHEETSSHEET 1.

Patentw Feb. 25, 1919.

G. HHNUNEN.

FILING MACHINE.

APPLICATION man IAN. 9, i9l8.

Patented Feb. 25, 1919.

2 SHEETS-SHEET 2.

GUS HEINONEN, OF WORCESTER, MASSACHUSETTS.

r'rnme-mncnmn.

aeaaee.

Specification of Letters latent. P t t 5, 19199 Application filed January 9, 1918. Serial No. 211,000.

series of files in such a way that the filing operation can be made continuous and thus expedite that operation very materially; to

provide a construction in which the entire length of the file can be employed for filing purposes instead of only a fraction of it as is ordinarily the case; to providemeans for supporting the files, positively from the rear while the are traveling past the point of filing so t at they can be made to file accurately and with any desired degree'of pressure; and to provide a supporting means for the files of an anti-friction character. Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in which Figure 1 is a side elevation of a filing machine constructed in accordance with this invention with parts broken away to show interior construction; Fig. 2 is an edge view of the same;

Fig. 3 is a side view of one of the file sup,

porting links and a file carried thereby;

Figs. 4, 5 and 6 are respectively a rear, a front, and an end elevation of the same, each of these views being provided with a central dot and dash line and illustrating the device in section on one side of the line and in elevation on the other, the file itself being omitted in Figs. 4 and 5;

Fig. 7 is a central sectional view of the same link;

; Fig. 8 is a similar view of the file;

Fig. 9 is an elevation of the anti-friction guide wheel; and

Fig.10 is an edge view of the same with a central line, showing the wheel in elevation on one side of the line and in central section on'the other.

It is a characteristic of our industrial establishments that hand work is being eliminated as fast as possible by substituting machinery for men to accomplish all possible mechanical results. that there is one line in which, as yet, only a very small percentage is accomplished by machinery; namely, filing. The hand file is an old tooland being operated by reciprocation and necessarily being held by one hand at each end, not much more than one half of the file is actually used in practice.

This invention, as stated above, is designed for the purpose of substituting mechanical for hand filing, and it also involves -the utilization of the entire length of the file and permits of a continuous operation, and also while doing the work of several men, permits that work to be done by a hand comparatively unskilled.

Referring particularly to the drawings, it will be seen that I have adoptedthe general idea of the ordinary band saw by providing a frame 1 adapted to support all the parts and carrying two wheels 2 and 3. These wheels are mounted on studs 4 and 5 secured to the frame and one of them is provided with a pulley 11 for driving the machine.

The frame 1 is shown as ofa general C- shape, the base supporting the stud 5, and the top the stud 4. The horizontal portion 20 constitutes a table for supporting the work.. This table is perforated to receive a series of supporting links 6, which are arranged end toend to form an endless chain passing over the grooved peripheries of the wheels 2 and 3. These may, if desired, be provided with leather surfaces to cushion thein and provide better driving contact than, would be the case with metal. These links 6 are concave on the back, the radius of the concave surface being the same as the radius of the wheels 2 and 3 so that as the links pass around the wheels their rear surfaces fit them.

Each of these links 6 is designed to carry a file 7. Of course the particular shape of file indicated in the drawings is not an essential because the files will be shaped in accordance with the work to be performed. Each link is provided with a depression 16 in the I find, however,

'an efi'ective way neeaeee center of the front edge extending from end to ,end but deeper in the center than anywhere else for receiving a similar projection 17 on the back of the file 7. The file and link are provided with perforations for re: c'eiving a holding pin'lz') by which the file is held in position on the link.

The rotation of the wheels drives this end less chain of files, preferably downwardly through the table 20. The work resting on the table is but 11 against the filing surface and pressed bac In order to hold the chain of files at this point posi ively, the tip end of the top of the C-shaped frame 1 is provided with a screw 8, and the table 20 is provided with a bolt 9 for holding the top and bottom respectively of a guide 10. This guide is grooved to receive the links 6 and constitutes a solid backing for them so that the work can be pressed back against the files and will find a solid surface to abut against.

In order to avoid iuinecessary friction and to support the links, both on the wheels and against the uide 10, a series of rollers 13 are employef each one being connected with the two adjacent ends of the link supports 6 by a shaft or stud 14 which constitutes the pivot stud for connecting the adj acent links.

It is to be observed that the links are bifurcated at their ends to provide interengaging projections 21 and 22 which are perforated to receive these pivot studs 14- There is a space between the imier arms 21 large enough to receive the roller 13. It will be observed also that these projections are so shaped as to permitof the links having a relative swinging motion about the studs 14, which necessarily permits the links to pass around the wheels, as illustrated by the dotted lines at the bottom of Fig. 3. It is to be observed that this pivotal connection is such that when the links are arranged in a straight series, which occurs between the wheels during the filing operation, the ends of the links contact with each other. As the files are of the same length they also contact With each other so as to provide a continuous ing surface.

By this arrangement it will be seen that the links not only provide a continuous filing surface for the files so that the entire surface can be used for the purpose intended, but by means of the anti-friction rollers 13 they are held in position on the guide 10 in without necessitating the employment of any great amount of power to drive the machine.

The principle of providing a plurality of detachable files arranged end to end while filing, and driving them continuously in the same direction past the work is believed to constitute an important advance in this art because the operation of filing is a tedious and expensive one, and it is replaced whenat ever possible by grinding, but by the employment of this principle it will be possible to file many articles which are now ground unsatisfaetorily, but especially it will be possible for a comparatively unskilled mechanic to do the work of a large number of experienced filers with an expenditure of a very small amount of power.

Although I have illustrated and described only a single form of the invention I am aware of the fact that many modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore I do not wish to be limited to all the details of construction herein shown and described, but what I do claim is:

1. In a filing machine, the combination of an endless series of pivotally connected links, a file carried by each link on its outer side, a guide for said links located in position adjacent to their inner sides, and a series of rollers carried by said links and projecting from them into position to engage the outer side of the guide.

2. In a filing machine, the combination of two cylindrical wheels, an endless band formed of pivotally connected rigid links passing around and supported by said wheels, files carried by said links, a table for supporting the work past which said series of links passes a guide for said links fixed in position, and a series of rollers carried at the ends of the links and projecting beyond the series thereof so as to engage said guide and the cylindrical surface of each wheel.

3. In a filing machine, the combination of a smooth surfaced cylindrical wheel, a band formed of rigid links passing over said wheel, said links being pivoted together end to end and having concave backs, the wheel over which said links pass fitting the concavity of the backs, rollers carried by the llIlkS and engaging the cylindrical surface of the wheel, and files'carried by the links.

4. In a filing machine, the combination of a serles of pivotally connected links, each of said links having an opening in the face thereof, a file for each link having a pro ectlon extending into said opening, and a pin passing through the projection for holding each file to the link, each file being the same length as the link.

5. In a filing machine, the combination of two wheels, an endless band formed of pivotally connected links passing around and supported by said wheels, each of said links having an opening in the front face thereof, a file for each link having a projection extending into said opening, and a pin passing through the projection for holding each file to the link.

mana e 6. In a filing machine, the combination of through the projection for holding each file two wheels, an endless band formed of pivto the link, each file being the same length otally connected links passing around and as the link. 10 supported by said Wheels, each of said links In testimony whereof I have hereunto 5 having an opening in the front face there0f,' aflixed my signature.

a file for each link having a projection extending into said opening, and a pin passing GUS HEINONEN. 

